Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
ty nang » ky nang, ty xang, ty hang
nang ma » tang ma, sang ma, nang cao
sach ty » sach y, sach tu, sach thu
vi cua » vai cua, di cua
tuc va » thuc va, truc va, tuc xa
cua te » cua tu
xuc va » duc va, luc va, xac va
va cam » va cham, va cao, va cai
ma hoi » mai hoi, xa hoi, ma hoa

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ty nang ma hoi. hieu ((va cam) OR (va cac)) ((xuc va) or (tuc va)) hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ty nang ma hoi. hieu ((va cam) OR (va cac)) ((xuc va) OR (tuc va)) hanh vi cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ty nang ma hoi. hieu ((va cam) OR (va cac)) ((xuc va) or (tuc va)) hanh vi cua te".
• Adding a wildcard symbol may retrieve word variants: thu sach ty nang ma hoi. hieu ((va cam) OR (va cac)) ((xuc va) or (tuc va)) hanh vi cua te*.